Pump-coupling or the like.



E. V. MYERS. PUMP COMPL-ING 0R ATHE LIK'E.A APPLICATION FILED MAII.2I. I9Is.

1 ,297,/71 9. Patented Mar. 18, 11919.

IIIIIwv IIIII i i INI/ENTQR awr ri@v EUGENE v. MYERS, OF EAST ORANGE, NEW-JERSEY, Assiolvon To A. SCHRADERS SON, l INC., or BROOKLYN, NEW YORK, A conromirioiv ornnw YORK.

PUMP-COUPLING 0R. THE LIKE.

Specication of Letters latent. Patentd Mal. 18, 1919.

Application led March 21, 1918. Serial No. 85,632.

To all whom tr/nay conccrn( Be it known that I, EUGENE V. MYERS, a citizen of the United States of America, re-

siding in East Orange, in the county of' for instance, whichare of what is known as' the quick detachable type, that is to say, couplings which could be attached to a threaded-part, such as a valve casing, with-A out the necessity of screwing it the entire length of the thread. Such constructions have been subject, however, to disadvantages which haveprevented their general use.

`According to the present invention Lprovide a structure which can be attached to a valve casing, in such manner as to make aA leak-tight joint, with great celerity and ease 'of operation. The structure is also applicable to such purposes as valve caps or other `similar devices wherein a tight joint is to be made between a valve .or the like and the cap.

The invention comprises a device having-a series of movable arms screw-threaded to engage the valve casing or other part, and

a wedging means for moving said arms inwardly, the wedging means being stationary or substantially so, and the arms being moved by the application of 'force to the part which carries them.

Referring tothe drawings, which illus- `trate severalv .forms of the inventionp- Figure 1 is an-elevation of the preferred form.

. Fig. 2 is a diametrical section of Fig. 1

shown as applied to a valve casing.

, Fig. 3 is a similar section with the parts in open position.

Fig. 4 is a cross section in Fig. 1.

Fig. 5 is a diametrical section of a modification. Fig. 6 is a s imilarsection of another'modification. i

Fig. 7 is a similar section o fication.

f a third modi- .Fig K8- is a View of' the invention aefapplied to a cap.

In the drawing I have shown the invention as applied to a pump coupling' adapted to beattached, for instance, to the tube of a pump or air tank.

Referring first to Figs. l to 3, let A indicate the device as a whole, which is provided with a tubular member B adapted for connection with a rubber tube leading from the pump. In the simplestform of construction the tube B is adapted to fit against the nipple C of a tirecasing D, although it may engage any other part of the tire casing where a leaktight joint may be made. Such joint is best made by a packing4 Ewhich in the construction shown is carried at the the nature of spring arms, although any other suitable construction of movable arms may be provided. Each of the arms G- is provided at its lower end with a screwwhich in the construction illust-rated are in threaded portion. H which is designed lto engage the screw-threads of the nipple C. The screw-threaded portions of the four arms forma substantially complete circle. A t the lower parts of the arms they are preferably formed with a beveled surface J, which engages asimilar surface K formed on the wedging in ember L. l The latter is connected with the pump tube B in any suitable manner as .by a flange M formed on the Wedging member L which bears against a flange Ol formed on the pump tube. .The wedging member L is provided with a sries of slots P, through which the spring arms G are introduced in assembling the parts.

. IThe Operation ofthe device i's.as follows: Normally .the parts are in the position of Fig. 3l with the spring arms G in their outward position. Theinternal diameter rof the device is then suflicientI to.' slip it over pressed downwardly with the effect thatthe spring arms are wedged inwardly and-enfgage the threads I, whereupon a fraction of l v the nipple C. The arm member F is thenl On'the'line li-4 applied, the parking; F. ha v already made a Seat on the top of the valve nipple and any downward pressure then applied to the arm y member being' lnstantlir lrananiitted to the' tube Band its parking E.

It will also be observed that the present invention ia lo he diatingrniahed from those devices in which the .vedging; member is pressed downwardl-,y to move the arma inwardly, sinee in thev present Conslruetion it la the member which carries the arma which is preslsed down to manipulate the deviee, and. the, wedging member tranamits the niovlnne'ittothe. tube ll or other part vlo he eompresaed agrainat the. rafiiua'.

it is preferable to lorm a flange Q which if; adapted to eontaet with the arm member l*y lo prevent the .vede'iug member li from dropping 'itl' the .lpring arms. Illia flange. plays no pari'. in the arlnal wort.: ol ronpliage'.

ln Fig. l have` .ahown a eonatrmtion in whirh the spring arme inatead el paaaing through the wedge. member are brought around the entaille o't the latter and up into the interior et the. wedge member. fin this eo11atrneti 1i1 the wedge member ig engaged at L" and the member Carrying' the arms al'. ll". lfo aeselnble the portions lil will be bent inwardlyy ,entieient to pass into the bottoni opening;- oit' the wedge niemhta', and 'then expanded outwardly to the. position Shown.

ln Fig. G the wedge member l? is formed with an external bevel K2 and the member F2 which earriea the spring arms is external to the wedge member and is formed 'with an internal bevel J2.

The operation of the constructions of Figs. 5 and is imilar to that described with referenee to Figs. l to, 3, thatis to say, the 'device 'isplaced over the 4valve,'and the arm member is pressed' downwardly until the threads engage, 'and a short turn ie athen given to the Wedge member. u.

It will be observed that inA the construetions of Figs. Ito 6 the wedginp; mein-ber is hung upon the part il or other part 'tov be compressed against the valve, so that'as the member which carries the spring arma moves downwardly'it acts against the part to be eompreseed. n. v

1n' Fig. 7 is illustrated a eonatruetion which mayv he' need in connection with valvee` having a .shoulder llt. llfn this construction. the wedge member lj* 1S external and the arms G are internal. The 11'r'en'1ho1.'-F3 which carries the arms n1 this oonstruetion 1a eonnected to the tube B2 so that an y tightening jHllLBii COPY '1,297,719

hv the. parking is aeeomplished by the downward movement of the arm member, andthe wedge member merel)r rests againsty the shoulder R, and acts-as a fixed w'edging snri'ace for moving the arm member inwardly. l`hi1 construction is available in some cases, but it requires much greater precision of manufacture than those hereinbefore referred to, due to the fact that the arm member is limited in its Capacity for downward movement` and the degree of movement which can henee be 4in'iparted to the tube ll ia slight. lf the'thrcads towhieh the part ia applied are sntlieiently deep, thisr Capacity.` Yfor downward movement after the couplingv threads engage 'an be increased by making` the wedfging' lanrtaee more tapering.

ln Fig. 8 l have illustrated the. invention as applied to a rap. the device beine* eenstrueted aeeorlilingj to Figs. 1 to 3, although it. will he understood that the other modi ['nzatioua are eguali)l applicable. If it be assumed, 'that the bore of the tube B be omitted. it will be observed thlt any of Athe eonetrneth111sy shown will make an effective leak-tight cap. ln Figi. S the wedge member is indirated at. .l'r and the arm member at ll. The packing' is indicated atfl4L and ma)v be lixed to the part El?, which in this ease my be formed iiitegrallg,v with the wedge member L, and may extend across the middle olf the Structure..

In each of the coimtrnetions shown in Figs. l to 7 'it' will be observed that the Coupling member proper is swiveled to the part` which carries the packing. This is not neeeasary, although it. 'is desirable in order that the packing may be relieved'rom the possibility ot' distortion as the' coupling :le applied;l Se also in Fig. 8 the packing may be Carried upon a carrier S which is provided with a stud, T swiveled to the part M4, so that the'eap can be rotated Without.

rotating the packing. 1

*It iS, of eeuwse, not'ne'eessary that both the armel andy the wedge. member be formed with tapering` Surfaces, -sinee auch surface )can be omitted fronr one' or the other. I Throughout the claims I have used the term l wedge member." to indicate the part which movesthe arms intoengagement with thel thread, irrespective or' whether, the taper is formed on this aart'or not.

Itfffwill be .o serve'd that while I have Shown and deseribed several forms ot the mfvention, that, I do not wish to be limited thereto, Smcevarioua. changes may be made'. therein without departing from the. spirit.

ot' 'the invention. Thev invention is appli- 'Cable to "other devices than coupling' and l. A deviee ot' the eharaeter described comprising 'a part to he pressed against a threaded member when the arm member is moved relatively to the wedge member.

2. Ahdevice of the character'. described comprising a part carrying the packing and adapted to be pressed against a threaded member to make a tight joint therewith, a wedge member, and an arm member having a' plurality of movable threaded arms, said Wedge member being the stationary member and said arm member being the movable member, and the threaded ends of said arms being adapted to coact with the wedge mem-l ber to engage said threaded member when the arm member is moved relatively to the Wedge member.

3. A' device of the character described comprising a tube having a packing adapted to be `pressed against the end o a valve casing to make a tight joint therewith, a wedge member, and an Iarm member having a kplurality of movable threadedA arms, said wedge member 'bein the stationary member dier' beingthe movable member, and the threadedends of said arms being adapted to coact with the wedge member to engage said valve casing when the arm member is moved relatively to the wedge member.v

4. A device bf the character described i comprising a part to be pressed against a threaded member to make a tight joint therewith, `a wedge member connected to said part, and a rotary arm member having a 'plurality of movable screw threaded arms the threaded ends of which are adapted to coact with the wedge member to engage said threaded part when the arm member is moved relatively to the wedge member.

5. A device of the character described comprising a'part to be pressed against a vthreaded member, a wedge member connected with said part to effect the pressing action., and means for forcing said wedge member downwardly along said threaded i member.

6. A pump 'coupling comprising a tubular. member, a wedge member connected with Said tubular member to press it downwardly,

and means for forcing down said wedge member.

7. A device of. the character ldescribed comprising a part to be pressed against a threaded member, a wedge member connectplurality of movable threaded arms having threaded `portions adapted to engage the threaded member, and said arms being adapted'to coact with the wedge member to engage said threaded member when said arms are moved relatively to the wedge member.

8. A device of the character described comprising a part to be pressed against a threaded member, a wedgel connected with said part to eii'ect the pressing action, and an arm member having a plurality of spring arms threaded to engage said threaded member, and said spring arms being adapted to engage said wedge when said arm member is moved lengthwise, and said arm member being adapted to be moved lengthwise to cause the arms to contract to engage the coupling with the threaded member.

9. A device of the character described comprising a part to be pressed against a threaded member, a' wedge 'connected with said part to effect the pressing action, and an arm member having a plurality of spring arms threaded to engage said threaded member, and said spring arms having their threaded portions lying within said wedge, and being adapted to engage said wedge when said arm member is moved lengthwise, and said arm memberbeing adapted to be moved lengthwise to cause the arms to contract to engage the coupling with the threaded member.

11. A device of the character described' comprising a pump tube having a packing, a circular wedging member engaging said tube-.and adapted tov move the same inwardly, and said wedging member having an internal tapered face, an arm member having a plurality of movable threaded arms passing through openings in the top of said wedging member and having threaded portions and said movable arms being adapted to coact with said wedging face to engage the threaded part of a valve casing when lsaid arm member is moved downwardly, and said arms being adapted to move said wedging member downwardly when the arm member is screwed on said casing. r

12. A device of the character,- described comprising a part to bev premed against the top of a threaded member, a wedging member directly connected with said part', so that :1s the wodgng member is pressed downwardly it carries Seid part with it, and menus for pressing, Suid Wedgng membel dmvuwm-dly, Said means comprising an arm member having e series of movable threaded arms, .Quid arms coasting With Savidwedging member so that as Seid arm member 1s pressed downwardly seid arms are ozmsed to move mvzu'dy and engage Seid threaded l0 member and said mns boing adapted after such e-ngzxgen'xent to be rotated in engagement` with a threaded men'xbeIr-to. screw the device farther ou said threaded member.

In witness- Wberoof, have hereun'o Signed my neme in tlmpre-Senoe of two subscribing Witnesses.

. EUGENE V. MYERS. Wtn osses: l

'I1-foams F, VALLACE, GRACE Gmmlsmnm. 

